范文1.Computers

　　Itisknowntousallthatthecomputeristhemostimportantinventioninthe20thcentury.Ithasbeendevelopedalotsinceitappeared.Also,ourdailylifehasgreatlychangedbecauseofit.

　　Acomputercanthinkandrememberthingslikeman,butitismillionsoftimesfasterthanhumanbegins.Asaresult,computershavebeenusedinthefieldsofagriculture(农业),industry(工业),education(教育)andsoon.Forexample,wecanlearnourlessonsathomebyusingacomputerinsteadofgoingtoschool.

　　Computershaveenteredourdailylife.Soitisimportantforustolearnhowtouseacomputer.Andwemuststartrightnow.

　　范文2：Computers

　　Thecomputerisawonderfulmachine.Theyarealreadywidelyusedinindustriesandinuniversities.Theyareusedinmanyways.

　　Computerscandomanykindsofwork.Forexample,computerscanhelpsusdomathsproblemsquickly.Someproblemsaretoohardforustoworkthemout,butcomputerscan.Ascientistcanaskcomputerssomequestions,andthecomputerscanansweronthescreen.

　　Inacar-factorycomputertellstherobotshowtodowiththecars.

　　Computersareveryuseful.Somanyparentsbuycomputersfortheirchildren.Theyhopecomputerscanhelpthemimprovetheirstudiesinschool,butsomechildrendon’tdoaswhatparentswantthemtodo.BecausetheyusedthecomputersforsurfingontheInternetandspendtoomuchtimeplayingcomputergamesinsteadoflearning.Itdoesnotgoodfortheireyesight.Sotheirparentscomplainaboutcomputersnothelpchildrentostudybutalsomakethemfallbehind.

　　Inmanycompaniescomputersinsteadofworkerstowork.Somanypeoplelosetheirjobs.Somanyworkersthinkcomputersbringthemalotoftrouble.

　　Ifcomputersaregoodforusorbadforusit’shardtosaysoIhopecomputerswillbeusedintherightway.

　　2).介绍因特网（Internet）的主要用途：

　　信息：看国内外新闻、获取其他信息；

　　通讯：发e-mail、打电话；

　　学习：上网上学校、阅读各种书籍、自学外语；

　　娱乐：欣赏音乐、观看体育比赛、玩棋牌游戏；

　　生活：购物、聊天（haveachat）、交友.

　　OntheInternet

　　TheInternetisbecomingmoreandmoreimportantinourdailylife.Onthenet,wecanlearnnewsbothathomeandabroadandallkindsofotherinformationaswell.Wecanalsosendmessagesbye-mail,makephonecalls,gotonetschool,readdifferentkindsofbooksandlearnforeignlanguagesbyourselves.Besides,wecanenjoymusic,watchsportsmatchesandplaychessorcards.Onthenet,wecanevendoshopping,haveachatwithothersandmakefriendswiththem.Inaword,theInternethasmadeourlifemorecolourful.